Vehicle front hitch supported power takeoff



Dec. 16, 1969 E. w. ENTERS 3,483,938

VEHICLE FRONT HITCH SUPPORTED POWER TAKECFF Filed Deo. 7, 1967 2Sheets-Sheet l N VE N T02.

Ep weep WT EN 'rE/Q5 Dec. 16, 1969 E. w. ENTERS 3,483,938

VEHICLE FRONT HITCH SUPPORTED E'OWER TAKEOFF Filed DEG. 7, 1957 2Sheets-Sheet 2 Nv EN To a /Dw/qeo w' EN T525 3,483,938 VEHICLE FRONTHITCH SUPPORTED POWER TAKEOFF lEdward W. Enters, Fredonia, Wis.,assigner to Gilsou Bros. Co., Plymouth, Wis., a corporation of WisconsinFiled Dec. 7, 1967, Ser. No. 688,882 Int. Cl. B601: /00, 17/28; 1102i 3/76 ILS. Cl. 18d-53 1 Claim ABSTRACT OF THE DISCLOSURE This disclosurerelates to a front hitch for coupling tractor attachments to the frontof the tractor, the tractor front having side beams with laterallyaligned pin sockets, the attachment having a hanger bracket removablyreceived between the beams and having a cross tube which aligns with thepin sockets, and trunnion pins telescopically receivable through thesockets and into the ends of the cross tube to couple the hanger bracketto the tractor.

Summary of the invention In accordance with the present invention,attachments are quickly and easily mounted and demounted to the front ofa tractor. The tractor has spaced side beams with laterally aligned pinreceiving openings or sockets. The attachment includes a mounting orhanger bracket removably received between the beams and having pinsockets aligned with the pin sockets on the frame. The mounting bracketis mounted, without the assistance of tools, by inserting trunnion pinsthrough the aligned sockets on the tractor frame and mounting bracket.

In the preferred embodiments herein disclosed, the sockets on themounting bracket are within the ends of a cross tube which spans acrossend plates on the mounting bracket. These end plates also constitutebracing arms which bear against the tractor to restrain rotation of thebracket about the pin axis. In some embodiments, the bracing arms havetangs or the like which are received within tang sockets provided on thetractor, thus to further anchor mounting bracket against rotation aboutthe pin axis.

Other objects, features7 and advantages of the invention will appearfrom the following disclosure.

Description of the drawings FIG. l is a side View, partly in verticalcross section, showing a tractor and a rear mounted tiller attachment. Abelt transmission to power the tiller is mounted on a front hitchcoupling embodying the present invention.

FIG. 2 is a cross section taken along line 2-2 of FIG. 1.

FIG. 3 is a cross section taken along the line 3-3 of FIG. 1.

FIG. 4 is a fragmentary vertical cross section showing a front hitchcoupling embodying the present invention, utilized to mount a plow ordozer blade at the front of the tractor.

FIG. 5 is a fragmentary perspective view of the lower front corner ofthe tractor, showing the mounting bracket in mounted position, portionsbeing broken away to expose details.

FIG. 6 is a fragmentary cross section taken along the line 6-6 of FIG.4.

FIG. 7 is a perspective view of a plow or dozer blade and its mountingbracket.

Description of the preferred embodiments Although the disclosure hereofis detailed and exact to enable those skilled in the art to practice theinvention,

nited States Patent O ICC the physical embodiments herein desclosedmerely exem plify the invention which may be embodied in other specificstructure. The scope of the invention is defined in the claims appendedhereto.

Tractor 10 is provided with a frame 11 including side beams 12 which arespaced laterally apart, as best shown in FIG. 5. Near the lower frontcorners of each beam 12 there is a trunnion pin receiving socket 13which constitutes a bearing support for a trunnion pin 14 by which thehanger attachment 15 is mounted on the tractor.

One embodiment of hanger attachment 15 is best shown in FIG. 7. Thereare side or end plates 16 supported in spaced apart parallel relation bycross plate 17 and cross tube 1S. Near their lower ends, end plates 16carry a pivot shaft 19 about which tube 21 is pivotally received. Pusharms 22 of the blade 23 are attached at their ends to the tube 21. Blade23 is also provided with skid shoes 24 and a coupling 20 for the pusharms 22.

Side plates 16 of the hanger or mounting bracket 15 have their upperends extended rearwardly and terminating in tangs 25. Tangs 25 areremovably received within sockets 26 formed on the tractor betweenhorizontal cross plate 27 and a comer notch formed in a corner block 28.

When the hanger bracket 15 is mounted on the tractor, its side plates orarms 16 are nested between the tractor side beams 12, the tangs 25 areinserted in the sockets 26, and the cross tube 18 is aligned with thepin receiving openings or sockets 13 in the side beams. The trunnionpins 14 are then inserted, as shown in FIG. 6, to telescopically enterthe beam sockets 13 and the sockets 31 which are at the ends of thecross tube 18, thus to couple the mounting bracket 15 to the tractor.This coupling is easily accomplished without the use of any tools.Engagement of the tangs 25 is sockets 26 prevents pivotal movement ofthe hanger bracket 15 about the axis of trunnion pins 14. If pivotalmovement in a counterclockwise direction, as shown in FIG. 4, is notobjectionable or is otherwise restrained, the tangs 25 can be omitted.In any event, the top edges of side plates 16 bear against theundersurface of tractor plate 27 to brace the bracket 15 againstclockwise motion, as viewed in FIG. 4. When the tangs 25 are provided,they lock the bracket 15 against counterclockwise movement, as viewed inFIG. 4.

Trunnions 14 are desirably provided with keeper Stems 32 which can beshifted along their own axes to enter and withdraw from the keeper eyesor coupling sockets 33 mounted on the beams 12. Accordingly, when thestems 32 are engaged in eyes 33, the trunnions are held against loss.

In the embodiment shown in FIGS. 4 through 7, cross tube 18 convenientlyprovides a pivot axis for a bell crank 34 by which the thrust of controlrod 35 may be transmitted to the lift link 36 which is pivotally mountedon the blade arm 22, thus to adjust the height of the blade 23.

In the embodiment of FIGS. l, 2, and 3, the attachment is mounted on therear of the tractor. The hitch coupling at the front of the tractorprovides an easily removed mounting for a belt transmission 37. Thehanger bracket and hitch coupling are identical in all respects withthat previously described, and the same reference characters are appliedthereto.

In this embodiment, a pulley 40 in the belt transmission housing 37 ispowered from the tractor PTO 50. Pulley 40 is on a drive shaft 41 whichextends rearwardly to the gear transmission 42 of a rotary tiller 43mounted on the draw bar 44 of the tractor on a bracket 45.

As best shown in FIGS. 2 and 3, the belt 46 which drives pulley 40 fromthe PTO 50 is kept taut by an idler pulley 47 mounted on a swing arm 48lunder the pressure of. spring49.V Y l The rotary tiller 43 is merelyone example of an implement with its implement transmission 42 which canbe mounted at the rear of the tractor. Y

- If it is desired that the attachment mounted on bracket 1S be'free toswing with respect to the tractor, the wings or plates 16 may be cutaway so as not yto interfere with such movement. In that event thebracket 15 is free to pivot about the axis of the pins 14.

I claim: p

1. Afront hitch for coupling tractor attachments to thefront of atractor, said hitch comprising said tractor having spaced side beamswith laterally aligned pin sockets, said attachment including a mountingbracket removably received between said beams and having pin socketsatits sides aligned with the pin sockets in said side beams, and trunnionpins removably receivable in said sockets to couple the mounting bracketto the tractor, k

plement transmission mounted at the rear of the tractor.

Va power transmission connected Vto said hanger bracket and drivemechanism from a tractor engine to the power transmission and fromthe'power transmission to the implement transmission.

` References Cited UNITED STATES PATENTS 1,536,081 5/1925 Dean 180-532,489,274 ll/l949 Donald 180--53 2,770,894 1l/1956 Gettleman 180-533,187,821 6/1965 Kamlukin 180--53 X 3,376,946 4/1968 Paulson 280-481 X3,388,929 6/1968 Miley 28o-481 A. HARRY LEVY, Primary Examiner Us. c1.XR. 172-301, 306; 23o-431

